primary_scales
Characteristic values to scale each objective function
Specification
Alias: objective_function_scales
Arguments: REALLIST
Default: 1.0 (no scaling)
Description
Each real value in primary_scales is a nonzero characteristic value
to be used in scaling each objective function. They only have effect
when the associated method specifies scaling.
This keyword is required for
primary_scale_types of 'value' and
optional for 'log'. When specified in conjunction with log,
scale values are applied prior to the logarithm, to permit log scaling
of strictly negative response functions.
Length: When specified, primary_scales must have length one of:
One (the single value will be applied to each objective function); or
Number of response groups (
objective_functions), so the number of scalars plus the number of fields when fields are present; orTotal number of response elements, so the number of scalar responses plus the sum of the lengths of the fields.
Usage Tips:
When primary_scales are specified, but not
primary_scale_types, the scaling type is assumed
to be ‘value’ for all primary response functions.
Use scale values of 1.0 to selectively avoid scaling a subset of response functions.
When scaling is active, it is applied to objective functions prior to
any weights and multi-objective sum
formation. See the equations in objective_functions.
See the scaling information under specific methods, e.g.,
method-*-scaling for details on how to use this keyword.
